it's a pump that sends blood throughout the body
The palaeozoic started in a period in which invertebrates started proliferating rapidly and in large amounts, which was considered a historical event and the end of that gigantic era.
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Pluto’s active geology and dynamism is what allows for it to have an interior ocean, a multilayered atmosphere, organic compounds and evidence of ancient lakes and multiple moons. According to Metzger, the only planet that has more complex geology is planet Earth.
Answer: F- Matrix.
Explanation: The cells are embedded in an extra cellular matrix made of fibers and ground substance.
Answer:answer in explanation
Explanation:They are the integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and reproductive systems.